What are the heat transfer techniques used to cool LEDs?


LEDs are cooled either by passive cooling or active cooling. Passive cooling involves a finned heat exchange system made of cast or extruded metal or plastic coated metal heat sink that offers a totally silent, robust, heat transfer. Passive cooling is reliant on the surface area of heat sink material and is orientation dependant. Active cooling may include conventional fans or diaphragm- based forced air cooling. Active cooling using a fan, although more efficient; is noisy, not so reliable, and needs electricity to run. Active cooling lays emphasis on forced air flow rate and is not orientation dependant.




Smart Buildings

19.10.2016, Birmingham NEC

Presentation: ‘Connected Lighting for Offices - Beyond Illumination’ by Darren Smith

Grand Designs Live

Find us on Stand L190, Technology Zone,
Hall 5

19-23.10.2016, Birmingham NEC

Highway Electrical Association (HEA)
Annual Conference
03.11.2016, Celtic Manor, Newport


9-10.11.2016, Canary Wharf, London

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